Apparatus for the production of goods by centrifugal casting



.July 16, 1940. J, HAUCK 2,208,368

APPARTS FOR THE PRODUCTION 0F GOODS BY CEN-TRIFUGAL CASTING original Filedmay 15. 1937 s sheetsshaun I9LLZ JQ HAUCK July 16, 1940.

APPARATUS FOR TH PRODCTION 0F GOODS BY GENTRIFUGAL CASTING Original Filed. May 15. 1937 5 Sheets-Sheet, 2

J. HAUCK 2,208,368 APPARATS FOR THE PRODUCTION OF GOODS BY CENTRIFUGAL CASTING July 16, 1940.'

Y5 Sheets-Sheet 5 Original Filed May 15, y1937 July 16; A1940. HAUCK f v 2,208,368

APPARATUS v.FOR'THEPRODUCTION`0F VGOODS BY CENTRIFUGAL CASI'IVICEII` Original File-d May- 15, 1937 5 SheletsfSheet 4 A qu i #Hawley July 16, 1940. HAUK 2,208,368

APPARATUS FOR THE PRODUCTION 0F Goons BY CENTRIFUGAL CASTING Original Filed May 15, 193'7l 5 Sheets-Sheet 5 lig. il I Patented July 16, 1940 N2,208,368 PATENT oFFlcE APPARATUS FOR THE PRODUCTION F GOODS BY CENTRIFUGAL CASTING Julius Hauck, Ternitz, Austria Original application May 15, 1937, Serial No. 142,842. Divided and this application January 6, `1938, Serial N0. 183,733.

In Austria May 1 Claim. (Cl. 222-65) The' invention refers to ari/apparatus for commercial mass production, especially of semimanufactures (for example bars, billets, blooms, vessels, etc.) ,by means of centrifugal casting, in which certain difficulties that were encountered heretofore are avoided as far as possible.

This application is a division of my application Serial No. 142,842, filed May 15, 1937.

The new apparatus is intended to allow the casting of the metal in moulds which are arl, ranged so as to be permanently inclined downwardly with respect to the vertical axis, the inclination preferably corresponding to the direction of the resultant of the centrifugal and gravitational forces acting upon the metal which is being cast, and room being left for the air contained in the moulds to escape unhindered.

In order to have all of the moulds lled evenly and quietly, the apparatus according to the invention comprises a plurality of moulds arranged around a vertical axis and means constituting in the centre of the apparatus a conical distributor for supplying molten metal to said moulds substantially in the direction of the centrifugal force.

In one species ofthis type of apparatus, said conical distributor and said moulds are mounted on a base member adapted to be' driven by a motor or` other driving means rotationally, said conical distributor being adapted to be removed separately from said base member, andalso being adapted to be removed `from the driving means as well as mounted thereon conjointly with said base member. Hereby a great facility in operation of the whole apparatus is attained.

In another species of said apparatus it is provided to arrange the moulds so as to form substantially continuations of the conical plane of the said distributor, the moulds being arranged in a plurality of superposed circles.

In a preferred embodiment of this kind of apparatus the individual moulds are so positioned that the moulds of the uppermost vcircle are parallel to, and extend outwardly beyond, those of the next following lower circle.

Hereby a definite sequence of filling of the individual circles of moulds is ascertained without losing the control of molten metal, since the latter will first fill the lowermost circle and after completing this-rise and ll the superposed circle and so on. It will easily be understood that such casting with multiple circles of moulds is much more effective and quicker than it would be otherwise.

In order to further assist the molten metal in the rising and lling the superposed circle of lmoulds, it is further provided to make certain recesses in the inwardly directed front walls of the moulds between the entering openings of adjacent molds of a lower circle whereby molten metal is caused to flow into th'e moulds in the next as bars or the like.

following superposed circle when the moulds of the lower circle are completely filled.

In certain cases it will be advisable to let each of the moulds in a lower circle and thecorrespondmg superposed moulds in the next following upper circle constitute a twin mould, preferably divided along the ,f central vertical plane which they have in common.

As a third species of my new apparatus I provide each mould having at its bottom side near the pouring in opening -an inclined projection adapted to form a portion ofa `conical plane which is built up in consequence of the close juxtaposition of all of said projections. The .juxtaposition of the said inclined projections fitting to each other will result in the formation of a conical plane being a substitute for a conical distributor firmly and permanently constructed.

Instead of providing the said projections at the inner ends of the moulds, it may also ber satisfactory to provide such projecting plane by constructing a protruding inclined rim` extending b'eyond the pouring in opening of each mould, said rim being integral with the base member, and thus constituting a conical plane.

In Figures l to 12 there are illustrated by way of example, some forms of apparatus in accordance with the invention. Figs. 1 and 2 show a casting device in sectional elevation and in part-sectional plan view respectively. Figs. 3 and 4 illustrate a modified casting device in sectional elevation and in part-sectional plan view respectively. Figs. 5 and 7 show two adjoining moulds (twin mould) in plan view and in sectional elevation respectively. Figs. 6 and 8 are front views of the twin mould provided with distributing members. Figs. 9 and 10 illustrate in sectional elevation and in plan view respectively a casting device with a cone-shaped distributor of modified construction.` Figs. 11 and 12 show in sectional elevation and in plan view respectively a casting device provided with a superposed and outwardly displaced mould.'

Figure 1 is an elevation of a device for the centrifugal casting of .semi-manufactures, such Fig. 2 is the corresponding plan view. The molten metal is fed to the moulds l by means of a central pouring head 2,

known per se, which is provided with ducts 3 and ertures 4, with one or more correspondingly large openings 5, through which the air, gases and the like contained in the moulds, and perhaps in the lmolten metal, can escape unhindered when the i molten metal is poured.

The central pouring head 2 and the moulds are arranged on the base member 8, which carries them, so that they can be removed individually,

It is thus possible .easily-and quickly'to place i on the driving element another base member with empty moulds and another central pouring head, vso that the process can, in somecases, be continued by repeated use of the same moulds and the same central pouring head with one and the samecharge. In order that it may not be necessary, upon removal of the moulds, to remove the whole relatively`heavy base member 8, this may be carried out in two parts comprising, for example, as shown by Fig. 9, thellighter upper part 8' upon which `the moulds and the central pouring heat are arranged, and the lower part 3, upon which the upper part 8 is placed. The drive of the base member about the vertical axis may be eifected by a motor 9 and driving shaft I0, for example, as illustratedk in Fig. 9,by means of a spur gear II, arranged on the underpart Il"y of the base member system a pinion I3 mounted g on a horizontal driving shaft I2 meshes, or by a roller system-friction system etc. 'Ihe .relatively large rotating parts are firmly' borne in that the base member is supported, for example by its rim I 4, on `a number of rollers I6 arranged, for example, on a, base plate I5. Above thecentrifugal casting device, there is arranged a travelling frame or the like I1, which is, for example, capable of travelling Lon rails, and which carries the auxiliary ladle I8, which is preferably movable upon it and into which it is preferred to pour, from the main ladle I9 only so much metal at a time as is necessary for one filling of the moulds, as described in my copending application of even date, Ser. No. 183,684.

The form of apparatus shown in vertical section in Fig. 3, and in Fig. 4 in plan, partly in sec- -tion through the moulds (the one half of the base member 3 being shown without moulds), is againv intended for carrying out the centrifugal casting. In this'case, instead of the central pouring head 2, there is provided a conical distributor for leading the metal to the moulds, which, like the moulds I, is arranged on the base member 8 so as to be individually removable, `but can be mounted upon and removed from the driving element conjointly with these parts. The conical distributor has, above all, the advantage that it is simpler, lighter and cheaper than the central pouring head 2 and has no ducts and therefore none of the attendant disadvantages. A further advantage of the conical distributor lies inthe fact that the metal can be poured onto it at any desired point on its upper surface, the stream of molten metal not being required to strike at a particular narrowly dened spot.` Further, the conical distributor is Aable to lead the metal to the moulds with greater certainty and more evenly distributed than is a central pouring yhead 2. Finally, the conical distributormakes it possible well to observe whetherthe metal is correctlyy pouredand when the moulds are lled so that the pouring` from the ladle can be correspondingly regulated.

According to a further yform intended for carrying out the centrifugal casting, which is shown in section in Fig. 9 and in plan view in Fig. 10, partly in section through the moulds, bothy the central pouring head 2 and the conical distributor are absent insomuch as an 32 with a spout 33, which feeds the metal to the moulds, is iixed within the circleformed by the 8', 8 and with which H intermediate funnel e moulds I being preferably removably arranged. In order to form a platform for the pouring of the metal, the bottoms of the moulds I have each a projection 3'I at the pouring aperture. In place of these projections at the bottom of the moulds, the base member which carries the moulds, for example the upper part 8 of the base member system 8', 8", can have an extension 38 which projects beyond the pouring apertures ofthe moulds. f f

A further advantageous form of apparatus in accordance with the invention for carrying out the process of centrifugal casting consists in the arrangement of one-or two further rows of moulds over the first row. In this manner', `the capacity of the apparatus, per cast, is doubled or trebled.' Fig. l1 shows an example of this form in section with two rows or circles of moulds" 40 and 4I for bars. Fig. 12 is a plan thereof'. According to theinvention, the upper moulds 4I- are here outwardly and parallely displaced relatively to the moulds 40 immediately beneath them, for example, a distance corresponding to the thickness of the back wall of the moulds. Recesses 45 are provided between, the llower moulds 40 for the purpose of feeding the metal to the upper moulds 4I, of which recesses 45 a plurality may be provided, as shown by Fig. 12. A convenient arrangement of two superposed moulds is illustrated in Figs. 5 to 8. Fig. 5 is a plan view of the moulds 42 and 43. Figs. 6 and 7 are views in the direction of the arrow marked in f Fig. 5, the moulds in Fig. 6 being divided hori- ,line a-b of Fig. 5. These moulds differ from those illustrated in Figs. 11 and 12 in that each pair of upper and lower moulds 43 and 42 forms a twin mould divided either horizontally or vertically along its longitudinal axis with a common middle dividing wall 4K4. In this case also recesses 45 are provided between the pouring openings of the lower moulds for the purpose of feeding the metal to the uppermost.

I wish it to be understood that I do not desire to be limited to ther exact details of'construction shown and described, for obvious modifications will occur to a person skilled in the art.

An apparatus for producing goods, more particularly semi-manufactures, by centrifugal casting, comprising a plurality of molds arranged arranged so that the surface of' said distributor lies flush with a lowermost point of the filling openings of said molds, and means for rotating said molds and distributor around said vertical `axis so that` molten metal deposited upon said surface when rotated is freely distributed over .said surface and immediately delivered to the molds of said lowermost circle and, after said molds are filled, rises to the molds of a next following upper circle, and so forth, until the molds of all said circles are filled with `molten metal by centrifugal action.

Jouus HAUCK. 

